Punch for perforating belts



M. c. GLEERUP-MULLER.

1T r H w 7 n 2% w is W Pm I A Magdelin C/nish'an Eire 1v)! M521 M5 AHorn c3 M. c. GLEERUP-MULLER. PUNCH FOR PERFORATING BELTS.

APPLICATION FILED JULY 9,19l9- 1,338,296. atented Apr. 27, 1920.

I I 2 SHEETS-SHEET Z- M gddin Chnpsimn awk-M61) M; A-Homaa UNITED STATES. PATENT oFFioE.

MAGnELINoHRIsTIAN GLEEnUP-MoLLER, or COPENHAGEN, DENMARK.

PUNCH FOR PERFORATING BELTS.

Application filed July 9, 1

To all whom it may concern.-

Be it known that I, MAGDELIN CHRISTIAN GLEERUP-lVIoLLER, manufacturer of engines, citizen of the Kingdom of Denmark, residing at No. 103 Jagtvej, Copenhagen, Denmark, have invented certain new and useful Improvements in Punches for Perforating Belts and the like, of which the following is a specification.

Joints in driving belts and the like are made by using belt fasteners provided with several hooks engaging a series of holes in each of the belt ends to be joined, and it is, therefore, of importance that the said holes in the belt ends be spaced in a manner corresponding exactly to the distance between the hooks on the belt fastener, by-means of which the belt ends are to be joined. It is also of importance to have the holes located exactly at the proper distance from the edge of the belt end.

' The present invention relates to a punch whereby the holes in the belt end may be spaced in such a manner that there will. be exactly the pre-determined distance between them, and such holes will also be spaced the proper d'stance from the edge of the belt end.

The present invention is mainly characterized by a carriage guided so that it may slide transversely of the punch, means being provided for clamping the belt end to the saidcarriage which is provided with a num ber of bores or holes spaced uniformly and serving to receive, when the punch is closed, a plug or the like provided on the aw opposite the carriage, so that the hollow-punch cannot pierce the belt end unless the car riage occupies such a position that one of the holes in the carriage is directly below the said plug. The invention is further characterized in that the carriage movable transversely of the punch is guided and shaped in such a manner that the punch proper may be turned through an angle of about 90 relatively to the carriage which later, in its new position, may again be moved across the punch, so that the belt end may be perforated during the first motion and, during the second motion, the edge of the belt end may be trimmed by means of a knife provided on the one jaw of the punch which supports the carriage, the said Specification of Letters Patent. Patented Apr. 27, 1920.

919. Serial No. 309,720.

knife being brought into its working position by the rotationof the punch.

The invention is illustratively exemplified in the accompanying drawings, in which:

Figure 1 shows, in side-elevation, the punch and the transversely movable carriage and, in dotted lines, the altered position of the punch relatively to the carriage.

Fig. 2 shows, in top-view, the carriage movable transversely of the punch.

Figs. 3 and 4 show the bottom carriage in vertical section and in top-view, respectively. t

In the drawing, 1 indicates the punch proper, one jaw 2 thereof supporting a suitable guiding member3 firmly connected to the jaw, and located inthe notch 4 in the bottom carriage 5, (Fig. 1), while the bottom carriage 5 is hinged to the jaw 2 by means of the pin 6. The top carriage 7 is guided by the horizontally projecting edges of the bottom carriage, and the carriage may be moved in a direction across the punch. In Fig. 2, the top carriage 7 is.

shown as provided with a series of holes 8 disposed at exactly equal distance from each other, the said distance corresponding exactly to the distance between the hooks on the belt fastener to be used in joining the belt. Besides the perforated raised plate 9 with the holes 8, the carriage supports also an eccentrically disposed roller or the like 10 adapted to be turned by means of a handle 11 or the like, the said roller serving to clamp the belt end in the carriage 7, after the belt end has been placed in position therein, i. c. after it haswbeen pushed a sufficient distance over the top carriage, and its longitudinal edge guided by being pressed against the guiding strip 12. I

After the belt end has been clamped in the top carriage 7 the punching operation commences, the punch being operated once for every hole to be produced. The holes in the belt end are punched by the hollowpunch 13 provided on the jaw 14, the latter also carrying a plug or guiding pin 15 of somewhat smaller diameter than the holes 8 in the plate 9 on the carriage. The plug 15 cannot move downward unless it is directly over one of the holes 8, and, consequently, the punch cannot be operated unless the carriage is in such a position that the plug 15 may move down into one of the holes 8. At the place where the hollowpunch 13 is pressed down toward the carriage 7, a copper bar or the like 16 is sol dered to the carriage. By moving the carriage in a direction across the punch stepwise, and each time a distance corresponding to the distance between two adjacent holes 8, the result will be that the belt end will be perforated with holes located at exactly equal distances from each other.

When the punching operation is finished, the belt end may be trimmed by means of the same punch, so that the trimmed edge will be located exactly at the proper distance from the perforations. This is effected by the carriage being moved into such a position that the bottom carriage 5 and the guiding piece 3 will come centrally below a corresponding opening 17 in the top carriaget', Fig. 2. When the parts are in this position, the punch may be moved about the pivot 6 into the position shown in dotted lines in Fig. 1. During the rotation, the carriages 5 and 7 retain their position relatively to one another, while the jaw 2 and the guiding piece 3 revolve about the pin 6. The rotation is continued, until the knife 18 disposed. at right angles to the jaw 2, and supported by the same, comes directly opposite the longitudinal slot 19 below the plate 9 in the carriage 7, Fig. 2. At the same time, one edge 20 on the guiding piece 3, Fig. 1, will be so located that it may enter the guiding slot in the top carriage together with the notched guiding edge on the bottom carriage. After the parts have been brought into the said positions relatively to each other, the cutting is performed by moving the punch lengthwise of the carriage.

I claim:

1. In a punch, the combination with a pair of relatively movable jaws, of an article supporting member movable on one of said jaws, and means for predetermining the spacing of holes punched in said article by the punch.

2. In a punch, the combination with a pair of relatively movable jaws, a perforatingdtool and a projection carried by one of sai jaws, of an article supporting member pair of relatively movable jaws, of an article supporting member movable on one of said jaws, means for clamping an article in position on said member, and means for predetermining the spacing of holes punched in said'article by the punch.

5. In a punch, the combination with a pair of relatively movable jaws, of a carriage slidably mounted on one of said jaws and movable transversely thereof, a perforated plate on said carriage, a pin on the other jaw adapted to enter the perforations,

in said plate, and punching members carried by said jaws and operative only when said pin enters one of said perforations.

6. The combination with a punching tool, of a carriage pivotally connected thereto and movable transversely thereof, and a cutter blade carried by the tool and adapted to cut articles supportedby the carriage.

7. The combination with a punching tool, of a longitudinally slotted carriage pivotally connected thereto and movable transversely thereof, and a cutter blade carried by said tool and adapted to project into the slot in the carriage and cut an article supported by said carriage during relative movement between the tool and carriage.

8. The combination with a punching tool, of a carriage pivotally connected thereto, and movable transversely thereof, a cutter blade carried by the tool and adapted to cut articles supported by the carriage during relative movement between the tool and carriage, and means for guiding the blade durin the cutting operation.

ture.

*- MAGDELIN CHRISTIAN GLEERUP-MULLER.

In testimony whereof he aflixes his signa- 

